Machine for making wooden dishes.



Patented Sept. Il, |900.

Gl A. ENSIGN.

MACHINE FOR MAKING WOODEN DISHES.

(Application led May 15, 1900.)

5 Sheets-Sheet l,

(No Model.)

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Patented Sept. Il, |900. G. A. ENSIGN. MACHINE FOR MAKING WOODEN DISHES.

(Application led May 15, 1900.) (No Model.)

5 Sheets-Sheet 2 'A l y fm fr ATTORNEYS No. 657,8l7. Patented sept. Il, |900. a. A. ENSIGN.

MACHINE FDH MAKING WUDEN DISHES.

(Application filed May 15, 190(k). (No Model.) 5 Sheets-Sheet 3.

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Patented Sept. Il. i900.

G. A. ENS-IGN. MACHINE FOR MAKING WOODEN DISHES.

(Application led May 15, 1900.)

5 SheetsSheet 4.

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Patented sept, n, |900.

G. A. ENSIGN.

MACHINE For: MAKING wooDl-:N DISH'ES.

(Application led May 15, 1900.)

5 Sheets-Sheei 5.

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llniTnD STATES PATENT Ottica.

GEORGE A. ENSIGN, OF DEFIANOF., OHIO, ASSIGNORVTO THE DEFIANCE MACHINE WORKS, OF SAME PLACE.

MACHINE FOR MAKING WOODEN DISHES.

SPECIFICATION forming part of Letters Patent No. 657.817. dated September 1 1, 1900.

Application filed May l5, 1900. Serial No. 16,762. (N0 model.)

block being trimmed for a new cut by a ro-v tary facing-knife.

The object of the invention is to provide a new and improved machine for making concave-convex wooden dishes which is comparatively simple and durable in construc-v tion and very effective and automatic in operation.

The invention consists of novel features and parts and combinations of the saine, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the inventioni is represented in the accompanying drawings, forming a part of this speciiication, in which similar characters of reference indicate corresponding parts in all the Views Figure l is a front perspective View of the improvement. Figi)isarearperspective View of the same. Fig. 3 isaplan view of the same. Fig. 4. is a longitudinal sectional section of the same on the line 4 #l in Fig. 3. a transverse section of the same on the line 5 5 in Fig. 3. Fig. 6 is a similar view of thel same on the line G G in Fig. 4. Fig. 7 is an enlarged sectional side elevation of the safety friction-feed on the lead-screw. Fig. S is arear face View of the same. Fig. 9 is an enlarged sectional side elevation ofthe part ol' the feed-screw for the friction-feed. Fig. l0 is a face view of the same. Fig. 11 is an enlarged end elevation of the oval knife and the means for clamping the same in place on its shaft. Fig. 1:2 is a sectional side elevation of the same, and Fig. 13 is an inner face view of one of the nut members for the lead-screw.

On the forward end of a suitably-con- Fig. 5a

structed frame' A is jouriialed a transverse shaft B, carrying an oval knife C for cutting at every revolution of the said shaft a concavo-convex dish from the end of a wooden block D, intermittently fed forward by a carriage E and trimmed at its forward face by facing-knives F F immediately after a dish is cut out, said facing-knives F F rotating in unison and operating successively on the block D, each knife trimming about onehalf of the face of the block at each operation.

The carriage E is mounted to slide longitudinally on suitable guideways A, formed on the main frame A, as is plainly shown in Fig. 6, and on said carriage E is formed a verticallydisposed guideway E', in which are mounted to slide vertically jaws G G for clamping the rear end of the block of wood in position, so that when the carriage E is moved forward the block is pushed along, the forward end of the block sliding over horizontally-disposed iianges H', formed on a supporting-plate H, held vertically adjustable on the frame A, as is plainly indicated in Figs. 4. and 6. For this purpose the supportingplate H is provided with elongated slots H2, engaged by bolts Hs screwing in the main frame, a supporting-screw H4 engaging the bottom of said plate to hold the latter in position after proper adjustment is made. The rear lower end of the block D rests on horizontally-disposed flanges G2, carried by the lower jaw G and in alinement with the flanges H', and as the said jaw G and the supportingplate H are vertically adjustable it is evident that the block D can be brought in proper positionthat is, with its longitudinal center intersecting the axis of the knife-shaft B, as will be readily understood by reference to Fig. a. The lower jaw G is held vertically adjust.- able by screw-rods G3 screwing in lugs G4 on said jaw and abutting with their lower ends on the carriage E. The upper jaw G can be raised or lowered by means of a screw-rod G5 in theguidewayE and havinga hand-wheel GG adapted to be turned by the operator to raise or lower the said jaw G for secu rely clamping the block in place and for allowing the insertion'of a new block when one is used up.

The carriage Ecan be fed forward and back- IOO ward by hand to allow `of placing a new block in position and to feed the block forward in proper position for cutting by the knives C and F F. The hand-feed consists, essentially, of a transverse shaft E2, (see Figs. 1 and 5,) journaled in a bearing E3, attached to thecarriage E, a hand-wheel E4 being secured on thev outer end of the shaft and under the control be engaged by a nut J, consisting of two m'embers J J2, pivoted at J3 on the carriage E and having upwardly and outwardly extending arms 4 extending from the pivot members J' J2. The arms J4 are connected by a spring J5 for pulling the arms toward each other, so as to normally hold the members J' J2 out of engagement with the lead-screw I. The arms J4 are adapted to be pressed apart by a wedgeshaped block J3, extending transversely and fulcru med at Js on the carriage E, as is plainly shown in Fig. 5, said block being provided with a hand-lever J7, as shown in Figs. 3 and 5. When the hand-lever J7 is moved downward by the operator to cause the block J 6 to swing the arms J4 apart, so that the members J J2 engage the lead-screw I, then the -said lever J7 is locked in this lowermost position by a pin K on a catch-arm K, extending upwardly and pivoted at its lower end K2 on the carriage E. A spring K3 is secured at its lower end to an extension-arm J9 of the lever J7, and the upper end of said spring is attached to a screw-rod K4, adjustably held on a lug K3, projecting from the upper portion of the catch-arm K. By the arrangement described the spring K3 has a tendency to pull the catch-arm K over and engage the pin K with the upper edge of the said lever J T when the latter is pressed downward by the operator at the time it is desired to start the intermittent feed of the carriage E. The catcharm K is adapted to abut against a stop-lug K3, secured to the forward end of the main frame A, so that when the carriage E has reached a forward position and the last dish has been cut from the block D then a further forward movement of the carriage E causes the said stop-pin to impart a rearward swinging motion to the catch-arm K, so that the pin K' moves out of engagement with lthe lever J7, and the latter is immediately swung upward by the action of the spring K3, so that the block J6 moves upwardout of engagement with the arms J4 to allow the spring J5 to open the members J J2 of the nut J, so

Now by the operator r that further forward feeding of the carriage' E ceases without stopping the intermittent motion of the lead-screw I.

In order to impart a continuous rotary motion to the shaft B, carrying the oval knife C, I provide the said shaft at one end with a bevel gear-wheel B in mesh with a bevel gear-wheel L, secured on a longitudinallyextending shaftL, journaledin suitable bearings attached to one side of the frame A. On the shaft L is secured a gear-wheel L2 in mesh with a pinion N, secured to or formed on a friction-disk N, fastened on a shaft N2, journaled in suitable bearings on one side of the frame A below the shaft L', and said friction-disk N is adapted to be engaged by a friction-pulley N3, mounted to turn and slide loosely on the shaft N2, said pulley N3 being connected by belt with other machinery for imparting a rotary motion to the pulley. The hub of the pulley N3 is provided with a shifting collar N4, engaged by a shifting fork N3, secured on one end of a transverse shaft N3, journaled in suitable bearings in the main .frame A and provided with an arm O (see Fig. 1)pivotally connected by a link O' with a treadle O2, fulcru med on a bracket O3, attached to the base of the frame A, as indicated n Fig. 2. On the treadle O2 is formed a lug O4, adapted to be engaged by a hook O5. held on a second treadle O6, pivoted on a bracket O7, likewise attached to the frame adjacent to the Ybracket O3. A spring O3, attached at its upper end to the frame A, (see Fig. 1,) is secured at its lower end to a collar O9, adjustably held by a set-screw on the link O', said spring serving to impart an upwardswinging motion to the link O when the treadle O2 is unlocked from the hook O5 When the operator presses the treadle O2 downward, then the link O imparts a downward-swinging motion to the arm O to turn the shaft N6 andf to cause the shifting fork N5 t0 impart a sliding motion to the frictionpulley N3, so that the latter movesin frictional Contact with the friction-disk Nl to rotate the latter, and consequently the pinion N, so that the rotary motion of the pinion is transmitted to the gear-wheel L2 and the shaft L to irnpart a rotary motion tothe gear-wheel B and rotate the shaft B, carrying the knife C. When the treadle O2 is swung downward and the hook O5 engages the lug O4, so as to hold the treadle O2 in a locked lower-most position, then the pulley N3 is in mesh with the friction-disk N. When it is desired to stop the. rotary motion of the friction-disk N and pinion N and the parts driven thereby, then the operator presses the treadle O3, so as to disengage the hook O5 from the lug .O4 to allow the spring O3 to pull the link O upward and move the friction-pulley N3 out of mesh with the disk N, as previously explained.

The two facing-knives F F' receive a continuous rotary motion and for this purpose are fastened on longitudinally-extending shafts F2 F3, the knife F bei ng set somewhat in ad- IIO stasi? s Vance of the knife F, so that the two knives cut successively on the face of the block, each knife cutting about one-half of the face of the block at each full revolution of said shafts. On the shafts F2 F3 are secured gear-Wheels F4 F5, respectively, (see Fig. 5,) of which the gear-wheel F5 is in mesh with an intermediate gear-wheel F5 in mesh with a gear-wheel F7 on the shaft L', so that when the latter is rotated a rotary motion is transmitted by the gear-wheels F7 F6 F5 to the shaft F3 and the rotary motion of the gear-wheel is transmitted by intermediate meshing gear-Wheels F3 F9 to the gear-wheel F5, so that both shafts F3 F2 are rotated in unison and in the right direction.

In order to impart an intermittent motion to the lead-screw I, the following device is provided: On the rear end of the shaft F3 (see Figs. 2 and 3) is secured a gear-wheel P, in mesh with a gear-wheel P', mounted to rotate loosely on a stud P2, carried by the rear end of the main frame A. On the outer face of the gear-Wheel P is secured a diamefrically-extending guideway P5, in which is adjustably held a stud P4, carrying a frictionroller P5, adapted to engage a projection Q' on an arm Q, pivotally connected at one end with a crank-arm Q2, mounted to rotate loosely on the rear end of the lead-screw I, as indicated in Figs. 2 and 3. On the crank-arm Q2 is held a pawl Q3, in mesh with a ratchetwheel R, forming part of a safety frictionfeed for the lead-screw I. The web of the gear-wheel R is engaged on opposite faces by friction-disks R R2, preferably made of brass or other material, the disk R abutting against the inner face of a collar R3, having its hub R4 secured to the leadscrew I, so that when the collar R3 is rotated a rotary motion is given to said lead-screw I. The other friction-disk R2 is pressed on by a plurality of springs R5, fitted in recesses in a collar R5, secured to the hub R'l by set-screws or other means,and the tension of said springs R5 is regulated by collars R7, against which screw the inner ends of screws R8, screwing in the collar R5. It will be seen that when the gear-wheel R is rotated, the frictional contact of the web of this gear-wheel with the friction-disk R, caused by the action of the springs R5on the friction-disk R2, causes a rotary motion of the collar R3,and consequently of the lead-screw I. The continuous rotary motion of the shaft F3 is transmitted by the gear-wheel P to the gear-wheel P', and as the friction-roller P5 is eccentrically mounted relatively to the said gear-wheel P it is evident that at each revolution it imparts a sliding movement to the projection Q to impart a similar movement to the arm Q and give a swinging' movement to the crank-arm Q2, which by the pawl Q3 imparts an intermittent rotary motion to the said gear-Wheel R, and the motion of the latter is transmitted by the safety friction-feed (previously described and shown in Figs. 7 and S) to the lead-screw I.`

(See Figs. 7 and 8.

The return movement of the arm Q is accomplished by a spring Q4, connected to one end of the arm Q and secured at its other end t0 a bracket Q5, attached to the rear end of the frame A and in which bracket the free end of the arm Q is mounted to slide freely. An adjustable stop Q6 on the arm Q limits the return sliding movement of the said arm Q by the stop abutting against the bracket'Q5. On the rear end of the lead-screw I is secured a hand-wheel I forv turning the said lead-screw by hand and feeding the block forward or backward Whenever it is deemed necessary to do so.

In Figs. ll and 12 is illustrated a simple means for securing the oval knife C in position on the shaft 13, the said knife being for this purpose provided at its ends with ontwardly-extending alined flanges C,1itting in recesses in collars C2, slipped on the shaft B and secured thereto by set-screws C3, said fianges preferably resting with their inner faces on flattened parts of the shaft B, as will be readily understood by reference to Fig. l2, so that the knife is securely fastened in position on the shaft when said set-screws C3 are screwed up. By loosening the set-screws G3 and moving the collars apart the knife can be readily removed and a new or differentlyshaped knife can be placed in position on the shaft and secured thereto in the manner described.

The operation is as follows: When the carriage E is in a rearmost position and the jaw G is in an uppermost position and the danges G2 and H are in alinement, then the block of wood D is placed in position on said fianges, the latter being adjusted so as to cause the longitudinal axis of the block to intersect the axis of the knife-shaft B. The operator now turns the hand-wheel GG so as to move the jaw G down ward,and thereby securely clamp the block of wood between the jaws G G. The operator now turns the hand-wheel E so as to move the carriage E,and with it the block D, forward until the front face of the block is in proper position for the knife C to make the first cut. When the several parts are now in this position, the operator presses down ou the lever J7 until the pin K engages and locks` the said lever against a return upward movement. The downward movement of the lever J7 causes the block J6 to move in contact with the arms J4, so that the members J J2 of the nut J close upon the lead-screw I. The operator now presses the treadle O2 until the latter is locked in position by the hook O5, and this movement of the treadle O2 causes the friction-pulley N5 to move in frictional contact with the friction-disk N', so that the several shafts L' B F2 F3 are rotated to cause the knife C to swing and make a cut on the front face of the block D, and as soon as this knife has left the face of the block thc facing knives F F make a cut to produce anew face in proper condition for the next cut by the knife C. As soon as thc facing-knives F F have left the block D the latter is fed forward the desired distance by the feedscrew I, being now turned to move the carriage E, and with it the block D, in a forward direction and the desired distance. This operation is repeated-that is, the knife C cuts out a dish from the face of the block-after which the latter is trimmed by the knives F F', and then the block is moved forward for another cut by the knife C. When the block is nearly used up, the arm K is tripped, as i previously explained, to 'release the lever J4 and to allow the spring J5 to open the members J J2 of the nut J, so that further turning of the lead-screw does not cause a further for- Ward feeding of the carriage E.

If for any reason the parts just described fail to perform their various functions, the safety friction device (illustrated in Figs. 7 and 8) begins to function, so that the rotary motion given to the gear-wheel R is not transmitted to the shaft I; but the said gear-wheel R rotates loosely between the friction-disks R R2. It is understood that should the lever J7 not be tripped at the time the carriage E moves into a forward position then the flange G2 by abutting against the fiange H' prevents further forward movement of the said carriage,and the friction-feed previously referred to begins to function, as above described, without danger of breaking any of the parts of the machine.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A machine for cutting wooden dishes, comprising a curved revolving dish-knife, and a plurality of facing-knives for trimming the face of a wood block after the revolving dishknife has cut a dish from the block, said facing-knives rotating in unison and being located one in advance of the other, substantially as shown and described.

2. A machine for cutting wooden dishes, comprising a curved revolving dishknife,and a plurality of facing-knives for trimming the face of the wood block after the ,revolving dish-knife has cut a dish from the block, the said facing-knives rotating in unison, one knife being in advance of the other and each reaching approximately over one-half of the face of the block, substantially as shown'and described.

3. A machine for cutting wooden dishes, comprising a curved revolving dish-knife, and a plurality of facing-knives mounted to rotate in unison, the facing-knives being located upon different sides of the dish-knife and eX- tending about over one-half of the face of the block.

4. A machine for cutting wooden dishes, having a block-holding carriage, clampingjaws on the said carriage for clamping the rear end of a wooden block, said jaws being adjustable in a vertical plane and a support for the forward end of the block, said support being adjustable in a plane parallel with the plane of adjustment of said jaws, substantially as shown and described.

5. In a machine for cutting wooden dishes, the combination with a revoluble curved dishknife for cutting dishes from the forward face of a block, of a carriage for feeding the block forward and having clamping-jaws for holding the block, said jaws being adjustable at right angles to the knife-shaft and a support for the forward end of the block, said' support being adjustable in a plane parallel with the' plane of adjustment of the clamping-jaws the said support and jaws permitting adjustment of the block, to bring the latter in proper position relatively to said knife, as set forth.

6. A machine for cutting wooden dishes, provided with a safety friction device for the carriage lead-screw, consisting of an intermittently-rotating gear-wheel, friction-disks on opposite faces of said gear-wheel, a collar secured on the said lead-screw and engaged by the first-named friction-disk, a second collar having recesses, and springs setin the second collar and pressing the second frictiondisk, substantially as shown and described.

7. A machine for cutting wooden dishes, provided with a safety friction device for the carriage lead-screw, consisting of an intermittently-rotating gear-wheel, friction-disks on opposite faces of said gear-wheel, a collar secured on the said lead-screw and engaged by the vfirst-named friction-disk, a second collar having recesses, springs set in Lthe second collar and pressing the second friction-disk, and means for adjusting the tension of the said springs, as set forth.

S. A machine for cutting wooden dishes, having an intermittent feeding device for the block-holding carriage, consisting of a revoluble wheel, a friction-roller held adjustably on the face of the said wheel, a lead-screw, a pawl-and-ratchet mechanism for the leadscrew, a friction device interposed between the ratchet and the lead-screw and a springpressed arm adapted to be engaged by the said friction-roller and connected with the said pawl-and-ratchet mechanism, substantially as shown and described.

9. A machine for cutting wooden dishes, having an intermittent feeding device for the block-holding carriage, consisting of a revoluble wheel, a friction-roller held adj ustably on the face of the said wheel, a lead-screw, a pawl-and-ratchet mechanism for the leadscrew, a spring-pressed arm adapted to be engaged by the said friction-roller and connected with the said pawl-and-ratchet mechanism, and means for limiting the return movement of the said spring-pressed arm, as set forth.

10. A machine for cutting wooden dishes, having a shaft, collars surrounding the shaft and having portions spaced therefrom, and a curved knife provided with outwardly-extending anges fitting between the collars and the shaft.

11. A machine for cutting wooden dishes, having a carriage for holding a wooden block,

IOO

IIO

a lead-screw, a sectional nut for engaging the lead-screw and having its members pivoted on the carriage and formed with extensionarms, and a hand-lever fulcrumed on the carriage, and having a Wedge-shaped block for engagement with the said arms, to close the nut members upon the lead-screw, substantially as shown and described.

l2. A machine for cutting Wooden dishes, having a carriage for holding a Wooden block, a lead-screw, a sectional nut for engaging the lead-screw and having its members pivoted on the carriage and formed With extensionarins, a hand'lever fulcrumed on the carriage, and having` a Wedge-shaped block for engagement With the said arms, to close the nut members upon the lead-screw, and a locking device for the said hand-lever, and carried by the said carriage, substantially as shown and described.

13, A machine for cutting Wooden dishes, having a carriage for holding a Wooden block, a lead-screw, a sectional nut for engaging the lead-screw and having it-s members pivoted on the carriage and formed with extensionarms, a hand-lever fulcrumed on the carriage and having a wedge-shaped block for engagement with the said arms, to close the nut members upon the lead-screw, a locking device for the said hand-lever and carried by the said carriage, and means for tripping the said locking device to unlock the said lever and allow the nut members to open, as set forth.

14. A machine for cutting Wooden dishes, having a carriage for holding a wooden block, a lead-screw, a sectional nut for engaging the lead-screw and having its members pivoted on the carriage and formed with extensionarms, a hand-lever fulcru med on the carriage and having a Wedge-shaped block for engagement with the said arms, to close the nut n1embers upon the lead-screw, and a spring connecting the said arms with each other, to open the nut members when the said Wedge-shaped block moves out of engagement with the said arms, substantially as shown and described.

In testimony whereof I have signed my name t0 this specification in the presence of two subscribing witnesses.

GEO. A. ENSIGN.

Witnesses:

GEO. D. DEATRICH, C. H. KITTENING. 

